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當前位置:網(wǎng)站首頁(yè)產(chǎn)品展示Whatman濾膜濾筒濾器 > > 7001-0004纖維素濾膜
纖維素濾膜

纖維素濾膜

簡(jiǎn)要描述:Whatman纖維素濾紙廣泛應用于實(shí)驗室樣品制備、微生物研究、水溶液過(guò)濾,有硝酸纖維素膜、醋酸纖維素膜和混合纖維素膜。其中硝酸纖維素膜和混合纖維素膜提供網(wǎng)格供選擇,網(wǎng)格線(xiàn)的墨水無(wú)毒,并且不含有細菌生長(cháng)抑制劑。

產(chǎn)品型號: 7001-0004

所屬分類(lèi):

更新時(shí)間:2023-11-19

詳細說(shuō)明:

Cellulose Membranes纖維素濾膜

Whatman提供以下纖維素膜:純醋酸纖維素膜,純硝酸纖維素膜,醋酸和硝酸混合纖維素酯膜.

 

Cellulose Acetate Membranes醋酸纖維素膜

Whatman醋酸纖維素膜由純的醋酸纖維素制造而成,這使得這種膜用于生物和臨床分析、無(wú)菌測試和閃爍測量非常理想。

醋酸纖維素膜的蛋白吸附力很低。它是親水性膜,適用于水溶液和酒精(介質(zhì))。醋酸纖維素膜已經(jīng)提高了溶劑抗性,尤其是對低分子量的醇類(lèi),同時(shí)加強了熱穩定性。由于物理強度高,這種濾膜可以耐180攝氏度高溫,所以適用于熱氣體以及用各種辦法進(jìn)行消毒,而保持膜的完整性。

技術(shù)參數-醋酸纖維素膜

型號           厚度            水流速                空氣流速           起泡點(diǎn)

                  μm             p=0.9bar                 p=3mbar                bar

                                      (ml/min/cm²       (ml/min/cm²

OE 66         115             20                         -                          3.7

OE 67         115             40                        25                        2.7

ST 68         140             170                       50                        1.5

ST 69         140             300                       90                        0.9

 

訂貨信息-醋酸纖維素膜

尺寸(mm       孔徑(μm          目錄號                     無(wú)菌                 數量/包裝

WCA

25                        0.2                      7001-0004                      100

25                        0.45                    7000-0002                      100

47                        0.45                    7000-0004                      100

OE 66

25                       0.2                       10404106                       100

47                       0.2                       10404112                       100

47                       0.2                       10404170                       100

50                       0.2                       10404114                       100

110                     0.2                       10404126                       50

142                     0.2                       10404131                       25

293                     0.2                       10404139                       25

300x600             0.2                       10404180                       5

OE 67

13                      0.45                      10404001                       100

25                      0.45                      10404006                       100

47                      0.45                      10404012                       100

50                      0.45                      10404014                       100

85                      0.45                      10404044                       50

100                    0.45                      10404021                       50

110                    0.45                      10404026                       50

142                    0.45                      10404031                       25

OE 67/A

142                    0.45                      10404331                       25

ST 68

47                      0.8                        10403112                       100

50                      0.8                        10403114                       100

ST 69

47                      1.2                        10403012                       100

50                      1.2                        10403014                       100

Cellulose Nitrate Membranes硝酸纖維素膜

推薦用于大多數日常應用,是在嚴格控制室內清潔的條件下生產(chǎn)的。一般情況下,無(wú)需要求任何明顯的技術(shù)改變,就可以直接替換掉其他生產(chǎn)廠(chǎng)商的用于一般過(guò)濾目的的濾膜。使用者會(huì )從Whatman現有的濾膜的改進(jìn)中獲得益處。

 

更高的強度和韌性

大多數膜本質(zhì)上都很脆弱而且不容易操作;但是很少在裝載到過(guò)濾器或在使用過(guò)程中損壞掉。Whatman硝酸纖維素膜韌性很明顯加強了,能承受住在不破壞膜完整性的條件下操作、裝載和消毒時(shí)的撕裂。經(jīng)破裂測試已是*的膜。

 

低可提取水平

濾膜中可提取物水平和過(guò)濾或吸附技術(shù)的改進(jìn)一樣變得越來(lái)越重要。尤其是在藥學(xué)、免疫學(xué)、生物學(xué)組織培養和衡量分析應用方面,高的提取物水平會(huì )起到負面影響。Whatman硝酸纖維素膜的提取物水平一般比其它同種型號的膜低。

 

孔徑精確

Whatman濾膜一個(gè)主要特征是孔徑精確度很高。膜的孔徑率經(jīng)先進(jìn)的生產(chǎn)和控制系統嚴格控制。另外,批間差的變化最小,保持一致的實(shí)驗結果。

 

增加的溫度穩定性

濾膜可以在不失完整性的情況下在121攝氏度下進(jìn)行正常消毒。硝酸纖維素膜有圓片、方片和卷狀等規格。

 

收縮量減小

過(guò)多的收縮在消毒過(guò)程中會(huì )產(chǎn)生問(wèn)題,也經(jīng)常會(huì )在消毒后再濾器中發(fā)生膜的撕裂,也可能導致流速的降低和整個(gè)過(guò)濾量的減少。Whatman濾膜在消毒過(guò)程中收縮量低。

 

特征和優(yōu)點(diǎn):

一、孔徑分布精確能改進(jìn)表面俘獲和分析。

二、提取物水平低,保證樣品的完整性。

 

應用

一、樣品分離

二、微生物研究

三、水溶液過(guò)濾

 

Cellulose Nitrate Filter Types硝酸纖維素膜類(lèi)型

白色光滑濾膜

這是大多數實(shí)驗室應用的標準濾膜,用于1.0μm-5.0μm大小的顆粒和細胞。過(guò)濾后的殘留物大多數保留在膜的表面,可以進(jìn)行沉淀物物理性回收和顯微鏡觀(guān)察。

 

用于核算和蛋白分析的硝酸纖維素膜

1975年,EMSouthern發(fā)明了從瓊脂凝膠轉移DNA到一張硝酸纖維素膜的技術(shù)。這個(gè)技術(shù)以它的發(fā)明者命名為Southern Blotting。隨后,蛋白和RNA轉移的技術(shù)也發(fā)展起來(lái)了。與層析技術(shù)相關(guān)的是需要相當數量的高質(zhì)量的色譜紙,3MM紙已經(jīng)成為的層析紙。

技術(shù)參數-硝酸纖維素膜

                                                 硝酸纖維

厚度                                         125μm

爆裂強度                                 >2 psi

重量                                         3.6-5.5 mg/cm²

最高操作溫度                          80

孔率                                          66-84%

蒸汽高壓滅菌                          yes

親水性                                      yes

 

典型應用-硝酸纖維素膜

應用領(lǐng)域                     孔徑(μm)           應用領(lǐng)域                                孔徑(μm)

普通                                                       沉淀物分析                            0.45

微過(guò)濾                         0.1                    懸浮顆粒                                 5

超凈                             0.1                    空氣污染監測             

滅菌                             0.2                    Asbestos Monitoring(NIOSH)   0.8

去除大多數微生物     0.45                  食品飲料控制            

分析性沉淀物             0.65                  大腸桿菌                                 0.45(網(wǎng)格)

純化過(guò)濾                     1                       總細菌計數                             0.2

去除顆粒物                 5                       組織培養基              

水中微生物分析                                  去除支原體                             0.1

細菌計數                     0.45(網(wǎng)格)  滅菌過(guò)濾                                 0.2

 

訂貨信息-硝酸纖維素膜

尺寸(mm            孔徑(μm           目錄號                     數量/

WCN

13                              0.2                           7182-001                100

13                              0.45                         7184-001                100

25                              0.2                           7182-002                100

25                              0.1                           7181-002                100

25                              0.45                         7184-002                100

25                              0.65                         7186-002                100

25                              0.8                           7188-002                100

25                              1.0                           7190-002                100

25                              3.0                           7193-002                100

25                              5.0                           7195-002                100

37                              0.45                         7184-003                100

37                              0.8                           7188-003                100

47                              0.1                           7181-004                100

47                              0.2                           7182-004                100

47                              0.45                         7141-004                100

47                              0.45                         7141-104                100

47                              0.45                         7141-114                100

47                              0.45                         7141-204                100

47                              0.45                         7141-124                200

47                              0.45                         7141-154                1000

47                              0.45                         7184-004                100

47                              0.65                         7186-004                100

47                              0.8                           7188-004                100

47                              1.0                           7190-004                100

47                              3.0                           7193-004                100

47                              5.0                           7195-004                100

82                              0.45                         7184-008                25

90                              0.2                           7182-009                25

90                              0.45                         7184-009                25

90                              0.8                           7188-009                25

90                              1.0                           7190-009                25

90                              5.0                           7195-009                25

142                            0.2                           7182-014                25

142                            0.45                         7184-014                25

293                            0.45                         7184-029                25

 

 

化學(xué)穩定性和惰性

PTFE適用于化學(xué)腐蝕性強的有機溶劑、水溶液和氣體,它對大多數的酸性、堿性和溶液都有抗性,非



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